Silver-gelatin Ritual Chamber production still, 4:5 portrait: a single weathered Greek pottery vessel occupies 65% of frame and rests on a black plinth in a near-empty institute chamber, surrounded by a physical hex lattice floor and one cream-and-dark stepped-cross institute tile. A black optical reader studies the vessel’s fracture line while three provenance cards sit in a sealed brass tray; one card remains blank. Phosphor-green #22c55e appears only in a short row of calibration tubes. Numbered callouts mark 01 authority seal, 02 uncertain fragment, 03 source-control dial. One small Bureau seal is struck lower right, hard directional tube-amp light, deep shadow, analogue clarity, gloved hands only, no faces, restrained German technical marks. Output in exactly 1122 x 1402 px, 4:5 portrait ratio.